Ringed Turtle-Doves also have a laugh-like  heh-heh-heh  call when excited. The White-winged Dove (Zenaida asiatica, also non-native) and the Mourning Dove (Zenaida macroura, a Florida native) are also very similar in size and appearance to the Eurasian Collared-Dove, but neither species has a black collar.
The megagametophyte produces an egg cell (or several egg cells in some groups) for the purpose of fertilization. After fertilization, the ovule develops into a seed.he ovary of the gynoecium produces one or more ovules and ultimately becomes the fruit wall. Ovules are attached to the placenta in the ovary through a stalk-like structure known as a funiculus (plural, funiculi). Different patterns of ovule attachment, or placentation, can be found among plant species, these include:
A fruit results from maturation of one or more flowers, and the gynoecium of the flower(s) forms all or part of the fruit. Inside the ovary/ovaries are one or more ovules where the megagametophyte contains the egg cell. After double fertilization, these ovules will become seeds.